Better than SUPER BLUE
Despite Birchwood Casey descriptions. The PERMA BLUE will give you the closest color to black if that's what you're going for.
The set is good but is not enough to blue a whole riffle external parts. You will need a lot more daubers because 1 is good for 1 use only and you can redip otherwise you will ruin and contaminate your BLUE liquid.
You will also need more and a better sanding paper and brass brush. Perhaps 2 extra bottles of degreaser and Perma Blue to cover the enitre external riffle side parts.
In my case, it was an experiment to restore the look of a Radoom AK47 plus 1 Polish mag.





